Home / 11,939.72-16,476.18-6,634.40

Finding the Fourth Proportional to 11,939.72, 16,476.18 and 6,634.40

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Solution

The fourth proportional to 11,939.72, 16,476.18 and 6,634.40 is: 9,155.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.72 : 16,476.18 = 6,634.40 : x
  2. Step 2: Convert to fraction form
    11,939.72/16,476.18 = 6,634.40/x
  3. Step 3: Cross multiply
    11,939.72x = 16,476.18 × 6,634.40
  4. Step 4: Simplify right side
    11,939.72x = 109,309,568.59
  5. Step 5: Solve for x
    x = 109,309,568.59/11,939.72
  6. Step 6: Final answer
    x = 9,155.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.